arch/arm/mach-at91/board-cap9adk.c

   1 /*
   2  * linux/arch/arm/mach-at91/board-cap9adk.c
   3  *
   4  *  Copyright (C) 2007 Stelian Pop <stelian.pop@leadtechdesign.com>
   5  *  Copyright (C) 2007 Lead Tech Design <www.leadtechdesign.com>
   6  *  Copyright (C) 2005 SAN People
   7  *  Copyright (C) 2007 Atmel Corporation.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #include <linux/types.h>
  25 #include <linux/gpio.h>
  26 #include <linux/init.h>
  27 #include <linux/mm.h>
  28 #include <linux/module.h>
  29 #include <linux/platform_device.h>
  30 #include <linux/spi/spi.h>
  31 #include <linux/spi/ads7846.h>
  32 #include <linux/fb.h>
  33 #include <linux/mtd/physmap.h>
  34
  35 #include <video/atmel_lcdc.h>
  36
  37 #include <mach/hardware.h>
  38 #include <asm/setup.h>
  39 #include <asm/mach-types.h>
  40
  41 #include <asm/mach/arch.h>
  42 #include <asm/mach/map.h>
  43
  44 #include <mach/board.h>
  45 #include <mach/at91cap9_matrix.h>
  46 #include <mach/at91sam9_smc.h>
  47 #include <mach/system_rev.h>
  48
  49 #include "sam9_smc.h"
  50 #include "generic.h"
  51
  52
  53 static void __init cap9adk_init_early(void)
  54 {
  55         /* Initialize processor: 12 MHz crystal */
  56         at91_initialize(12000000);
  57
  58         /* Setup the LEDs: USER1 and USER2 LED for cpu/timer... */
  59         at91_init_leds(AT91_PIN_PA10, AT91_PIN_PA11);
  60         /* ... POWER LED always on */
  61         at91_set_gpio_output(AT91_PIN_PC29, 1);
  62
  63         /* Setup the serial ports and console */
  64         at91_register_uart(0, 0, 0);            /* DBGU = ttyS0 */
  65         at91_set_serial_console(0);
  66 }
  67
  68 /*
  69  * USB Host port
  70  */
  71 static struct at91_usbh_data __initdata cap9adk_usbh_data = {
  72         .ports          = 2,
  73 };
  74
  75 /*
  76  * USB HS Device port
  77  */
  78 static struct usba_platform_data __initdata cap9adk_usba_udc_data = {
  79         .vbus_pin       = AT91_PIN_PB31,
  80 };
  81
  82 /*
  83  * ADS7846 Touchscreen
  84  */
  85 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  86 static int ads7843_pendown_state(void)
  87 {
  88         return !at91_get_gpio_value(AT91_PIN_PC4);      /* Touchscreen PENIRQ */
  89 }
  90
  91 static struct ads7846_platform_data ads_info = {
  92         .model                  = 7843,
  93         .x_min                  = 150,
  94         .x_max                  = 3830,
  95         .y_min                  = 190,
  96         .y_max                  = 3830,
  97         .vref_delay_usecs       = 100,
  98         .x_plate_ohms           = 450,
  99         .y_plate_ohms           = 250,
 100         .pressure_max           = 15000,
 101         .debounce_max           = 1,
 102         .debounce_rep           = 0,
 103         .debounce_tol           = (~0),
 104         .get_pendown_state      = ads7843_pendown_state,
 105 };
 106
 107 static void __init cap9adk_add_device_ts(void)
 108 {
 109         at91_set_gpio_input(AT91_PIN_PC4, 1);   /* Touchscreen PENIRQ */
 110         at91_set_gpio_input(AT91_PIN_PC5, 1);   /* Touchscreen BUSY */
 111 }
 112 #else
 113 static void __init cap9adk_add_device_ts(void) {}
 114 #endif
 115
 116
 117 /*
 118  * SPI devices.
 119  */
 120 static struct spi_board_info cap9adk_spi_devices[] = {
 121 #if defined(CONFIG_MTD_AT91_DATAFLASH_CARD)
 122         {       /* DataFlash card */
 123                 .modalias       = "mtd_dataflash",
 124                 .chip_select    = 0,
 125                 .max_speed_hz   = 15 * 1000 * 1000,
 126                 .bus_num        = 0,
 127         },
 128 #endif
 129 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 130         {
 131                 .modalias       = "ads7846",
 132                 .chip_select    = 3,            /* can be 2 or 3, depending on J2 jumper */
 133                 .max_speed_hz   = 125000 * 26,  /* (max sample rate @ 3V) * (cmd + data + overhead) */
 134                 .bus_num        = 0,
 135                 .platform_data  = &ads_info,
 136                 .irq            = AT91_PIN_PC4,
 137         },
 138 #endif
 139 };
 140
 141
 142 /*
 143  * MCI (SD/MMC)
 144  */
 145 static struct at91_mmc_data __initdata cap9adk_mmc_data = {
 146         .wire4          = 1,
 147 //      .det_pin        = ... not connected
 148 //      .wp_pin         = ... not connected
 149 //      .vcc_pin        = ... not connected
 150 };
 151
 152
 153 /*
 154  * MACB Ethernet device
 155  */
 156 static struct at91_eth_data __initdata cap9adk_macb_data = {
 157         .is_rmii        = 1,
 158 };
 159
 160
 161 /*
 162  * NAND flash
 163  */
 164 static struct mtd_partition __initdata cap9adk_nand_partitions[] = {
 165         {
 166                 .name   = "NAND partition",
 167                 .offset = 0,
 168                 .size   = MTDPART_SIZ_FULL,
 169         },
 170 };
 171
 172 static struct atmel_nand_data __initdata cap9adk_nand_data = {
 173         .ale            = 21,
 174         .cle            = 22,
 175 //      .det_pin        = ... not connected
 176 //      .rdy_pin        = ... not connected
 177         .enable_pin     = AT91_PIN_PD15,
 178         .parts          = cap9adk_nand_partitions,
 179         .num_parts      = ARRAY_SIZE(cap9adk_nand_partitions),
 180 };
 181
 182 static struct sam9_smc_config __initdata cap9adk_nand_smc_config = {
 183         .ncs_read_setup         = 1,
 184         .nrd_setup              = 2,
 185         .ncs_write_setup        = 1,
 186         .nwe_setup              = 2,
 187
 188         .ncs_read_pulse         = 6,
 189         .nrd_pulse              = 4,
 190         .ncs_write_pulse        = 6,
 191         .nwe_pulse              = 4,
 192
 193         .read_cycle             = 8,
 194         .write_cycle            = 8,
 195
 196         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE,
 197         .tdf_cycles             = 1,
 198 };
 199
 200 static void __init cap9adk_add_device_nand(void)
 201 {
 202         unsigned long csa;
 203
 204         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 205         at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 206
 207         cap9adk_nand_data.bus_width_16 = board_have_nand_16bit();
 208         /* setup bus-width (8 or 16) */
 209         if (cap9adk_nand_data.bus_width_16)
 210                 cap9adk_nand_smc_config.mode |= AT91_SMC_DBW_16;
 211         else
 212                 cap9adk_nand_smc_config.mode |= AT91_SMC_DBW_8;
 213
 214         /* configure chip-select 3 (NAND) */
 215         sam9_smc_configure(3, &cap9adk_nand_smc_config);
 216
 217         at91_add_device_nand(&cap9adk_nand_data);
 218 }
 219
 220
 221 /*
 222  * NOR flash
 223  */
 224 static struct mtd_partition cap9adk_nor_partitions[] = {
 225         {
 226                 .name           = "NOR partition",
 227                 .offset         = 0,
 228                 .size           = MTDPART_SIZ_FULL,
 229         },
 230 };
 231
 232 static struct physmap_flash_data cap9adk_nor_data = {
 233         .width          = 2,
 234         .parts          = cap9adk_nor_partitions,
 235         .nr_parts       = ARRAY_SIZE(cap9adk_nor_partitions),
 236 };
 237
 238 #define NOR_BASE        AT91_CHIPSELECT_0
 239 #define NOR_SIZE        SZ_8M
 240
 241 static struct resource nor_flash_resources[] = {
 242         {
 243                 .start  = NOR_BASE,
 244                 .end    = NOR_BASE + NOR_SIZE - 1,
 245                 .flags  = IORESOURCE_MEM,
 246         }
 247 };
 248
 249 static struct platform_device cap9adk_nor_flash = {
 250         .name           = "physmap-flash",
 251         .id             = 0,
 252         .dev            = {
 253                                 .platform_data  = &cap9adk_nor_data,
 254         },
 255         .resource       = nor_flash_resources,
 256         .num_resources  = ARRAY_SIZE(nor_flash_resources),
 257 };
 258
 259 static struct sam9_smc_config __initdata cap9adk_nor_smc_config = {
 260         .ncs_read_setup         = 2,
 261         .nrd_setup              = 4,
 262         .ncs_write_setup        = 2,
 263         .nwe_setup              = 4,
 264
 265         .ncs_read_pulse         = 10,
 266         .nrd_pulse              = 8,
 267         .ncs_write_pulse        = 10,
 268         .nwe_pulse              = 8,
 269
 270         .read_cycle             = 16,
 271         .write_cycle            = 16,
 272
 273         .mode                   = AT91_SMC_READMODE | AT91_SMC_WRITEMODE | AT91_SMC_EXNWMODE_DISABLE | AT91_SMC_BAT_WRITE | AT91_SMC_DBW_16,
 274         .tdf_cycles             = 1,
 275 };
 276
 277 static __init void cap9adk_add_device_nor(void)
 278 {
 279         unsigned long csa;
 280
 281         csa = at91_sys_read(AT91_MATRIX_EBICSA);
 282         at91_sys_write(AT91_MATRIX_EBICSA, csa | AT91_MATRIX_EBI_VDDIOMSEL_3_3V);
 283
 284         /* configure chip-select 0 (NOR) */
 285         sam9_smc_configure(0, &cap9adk_nor_smc_config);
 286
 287         platform_device_register(&cap9adk_nor_flash);
 288 }
 289
 290
 291 /*
 292  * LCD Controller
 293  */
 294 #if defined(CONFIG_FB_ATMEL) || defined(CONFIG_FB_ATMEL_MODULE)
 295 static struct fb_videomode at91_tft_vga_modes[] = {
 296         {
 297                 .name           = "TX09D50VM1CCA @ 60",
 298                 .refresh        = 60,
 299                 .xres           = 240,          .yres           = 320,
 300                 .pixclock       = KHZ2PICOS(4965),
 301
 302                 .left_margin    = 1,            .right_margin   = 33,
 303                 .upper_margin   = 1,            .lower_margin   = 0,
 304                 .hsync_len      = 5,            .vsync_len      = 1,
 305
 306                 .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 307                 .vmode          = FB_VMODE_NONINTERLACED,
 308         },
 309 };
 310
 311 static struct fb_monspecs at91fb_default_monspecs = {
 312         .manufacturer   = "HIT",
 313         .monitor        = "TX09D70VM1CCA",
 314
 315         .modedb         = at91_tft_vga_modes,
 316         .modedb_len     = ARRAY_SIZE(at91_tft_vga_modes),
 317         .hfmin          = 15000,
 318         .hfmax          = 64000,
 319         .vfmin          = 50,
 320         .vfmax          = 150,
 321 };
 322
 323 #define AT91CAP9_DEFAULT_LCDCON2        (ATMEL_LCDC_MEMOR_LITTLE \
 324                                         | ATMEL_LCDC_DISTYPE_TFT    \
 325                                         | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE)
 326
 327 static void at91_lcdc_power_control(int on)
 328 {
 329         if (on)
 330                 at91_set_gpio_value(AT91_PIN_PC0, 0);   /* power up */
 331         else
 332                 at91_set_gpio_value(AT91_PIN_PC0, 1);   /* power down */
 333 }
 334
 335 /* Driver datas */
 336 static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data = {
 337         .default_bpp                    = 16,
 338         .default_dmacon                 = ATMEL_LCDC_DMAEN,
 339         .default_lcdcon2                = AT91CAP9_DEFAULT_LCDCON2,
 340         .default_monspecs               = &at91fb_default_monspecs,
 341         .atmel_lcdfb_power_control      = at91_lcdc_power_control,
 342         .guard_time                     = 1,
 343 };
 344
 345 #else
 346 static struct atmel_lcdfb_info __initdata cap9adk_lcdc_data;
 347 #endif
 348
 349
 350 /*
 351  * AC97
 352  */
 353 static struct ac97c_platform_data cap9adk_ac97_data = {
 354 //      .reset_pin      = ... not connected
 355 };
 356
 357
 358 static void __init cap9adk_board_init(void)
 359 {
 360         /* Serial */
 361         at91_add_device_serial();
 362         /* USB Host */
 363         at91_add_device_usbh(&cap9adk_usbh_data);
 364         /* USB HS */
 365         at91_add_device_usba(&cap9adk_usba_udc_data);
 366         /* SPI */
 367         at91_add_device_spi(cap9adk_spi_devices, ARRAY_SIZE(cap9adk_spi_devices));
 368         /* Touchscreen */
 369         cap9adk_add_device_ts();
 370         /* MMC */
 371         at91_add_device_mmc(1, &cap9adk_mmc_data);
 372         /* Ethernet */
 373         at91_add_device_eth(&cap9adk_macb_data);
 374         /* NAND */
 375         cap9adk_add_device_nand();
 376         /* NOR Flash */
 377         cap9adk_add_device_nor();
 378         /* I2C */
 379         at91_add_device_i2c(NULL, 0);
 380         /* LCD Controller */
 381         at91_add_device_lcdc(&cap9adk_lcdc_data);
 382         /* AC97 */
 383         at91_add_device_ac97(&cap9adk_ac97_data);
 384 }
 385
 386 MACHINE_START(AT91CAP9ADK, "Atmel AT91CAP9A-DK")
 387         /* Maintainer: Stelian Pop <stelian.pop@leadtechdesign.com> */
 388         .timer          = &at91sam926x_timer,
 389         .map_io         = at91_map_io,
 390         .init_early     = cap9adk_init_early,
 391         .init_irq       = at91_init_irq_default,
 392         .init_machine   = cap9adk_board_init,
 393 MACHINE_END